Kindroid vs Nomi vs Replika: Which Remembers You Best?

Adults only. Kindroid, Nomi and Replika all require users to be 18 or older under their own terms. This guide compares memory, price, rules and privacy, and is non-explicit.

How this guide was made. This is a documentation-based comparison. Every feature, price and rule below was read on 27 October 2026 on the company’s own help pages, update posts, privacy policy, terms or US App Store listing, and each page is listed in the sources. Nothing here is hands-on testing, and no recall test was run. Memory descriptions are the companies’ own claims. Google Play listings could not be loaded for this guide, so store details are from the US App Store only. Prices vary by country and platform. For how we source and date guides, see how we review.

The short answer

Memory is hard to judge from the outside. None of the three companies publishes a memory benchmark, a context size in tokens, or any test of how accurately its companion recalls things. So “which remembers you best” cannot be answered with a number.

What can be compared is what each company says its memory does, what you can see and edit, and what you pay for more of it:

• Kindroid documents the most: named memory layers, character limits, and larger memory sold as add-ons.
• Nomi makes the boldest claims (“human-level”, “infinite”) and gives you an editable Mind Map.
• Replika has a simple Memory tab, and its help centre says chatting will always be free.

Only choosing between Nomi and Kindroid? Nomi vs Kindroid compares those two on every plan, add-on and rule, not just memory.

Kindroid and Replika pay Aitryvo nothing. Aitryvo is in Nomi’s affiliate programme, so the Nomi links on this page may earn a commission if you subscribe, at no extra cost to you. This comparison was written before we joined, and the money does not change it. See our affiliate disclosure.

Side by side

Memory: what each company claims

Kindroid

Kindroid’s help centre splits memory into three types: persistent, cascaded and retrievable.

• Persistent memory covers the backstory, key memories, example messages, directives, Learned Context (subscribers only) and group context, plus recent chat history. - Cascaded Memory is what Kindroid calls its “proprietary system of medium term memory”. It claims this can expand effective conversation history “to hundreds or thousands of messages prior”. It is a subscriber feature, though free accounts get it in one-to-one chats while preview messages last.
• Long-term memory is consolidated from individual chats, group chats and voice calls. Kindroid says it “gets stronger on higher subscription tiers”.
• Journal entries are memories you can write or approve. Each can be 20 to 500 characters, with up to eight keyphrases, and there is a hard cap of 500 entries. Kindroid suggests at most one entry a day.

Editing. You can edit all aspects of the journal at any time. Learned Context is split into three sections (800, 1,200 and 800 characters) that you can view and edit in Personality settings. You can tap a reply to see which long-term memories it recalled and deprioritise one. The memory page does not say whether you can delete individual long-term memories.

Paid memory. Kindroid’s subscriptions page says the standard subscription brings longer short-term context, Cascaded Memory and enhanced long-term memory. Ultra is a monthly add-on for “higher memory capacity” that extends context further and adds an Additional Context field for a longer backstory. MAX goes further again. Both are limited to users with significant chatting and calling history. Kindroid gives no token counts for any tier.

Nomi

Nomi’s homepage says its “short, medium, and long term memory are keys to engaging conversations”. Its App Store listing goes further, calling Nomi “the only AI with human-level long term memory”, and a December 2024 update post refers to “infinite long term memory”. These are Nomi’s marketing claims. No measurement is offered for either.

• Medium-term memory. A March 2025 update says Nomis “can now remember what happened 1,000+ messages ago much more clearly” and that medium-term memory has fewer “hallucinated, conflated, or misunderstood details”. No context size is stated.
• Mind Map. Introduced as Mind Map 2.0 in October 2025, it is described as “the big-picture memory” for each Nomi or group chat. You can view it as a graph or searchable table, edit entries to correct mistakes and add new ones. Nomi says Mind Maps “assist actual memories, not replace or alter them”, and the first one “can take ~500+ messages to form”.
• Identity Core. Nomi says each Nomi decides for itself what goes here, and “You cannot directly view your Nomi’s Identity Core.”
• Backstory and Shared Notes. The App Store lists “Customizable backstories and Shared Notes”. A September 2024 post set the paid backstory limit at 2,000 characters; it may have changed since.

Nomi’s pages read for this guide do not say that long-term memory differs between free and paid accounts.

Replika

Replika’s help centre says its “memory is built on layers”. Some memories appear in the Memory tab, while others come from “a deeper system that draws on patterns from your overall conversation history”. The homepage headline is “Always remembers what matters”, and the App Store says it “remembers your people, plans, and goals”.

• Editing. You can scroll the Memory tab, tap a memory to read or remove it, and add memories by hand. Replika warns that deleting memories “may affect your Replika’s ability to recall certain details”.
• Backstory. You write traits in the third person, and Replika advises positive phrasing because the system “processes positive statements more effectively than negatives”.
• Chat history. Only the last four months of chat can be displayed, but Replika says this “does not affect your Replika’s memory” and retained memories stay accessible.
• Paid memory. Replika Ultra adds “the ability to save memories and view which ones are used during conversations”.

Replika publishes no context size or recall figures.

Price and free access

Kindroid. The US App Store lists the Kindroid Subscription at $15.99, three months at $42.99 and yearly at $159.99. Ultra is $28.99 and MAX is $68.99; Kindroid says both are monthly only and require the base subscription. New accounts get a one-time preview of 50 messages with standard paid memory (“15 in some regions”), 5 selfies, 5,000 audio credits and up to 2 Kindroids. A 3-day premium trial is also described. After the preview, trial or subscription ends, the account becomes read-only. Kindroid says refunds are case by case and “generally” not offered.

Nomi. The US App Store lists the Standard Plan at $15.99, $39.99 quarterly and $99.99 yearly, and the Launch Plan at $9.99 a month or $59.99 a year. Nomi Credits run from 40 for $4.99 to 1,800 for $99.99. The homepage says it is free to start chatting. A comparison article published by Nomi says free accounts get “two images per day”. No free message limit is published, and Nomi’s terms say payments are nonrefundable except as stated. Our Nomi AI pricing guide breaks down free versus paid and what each plan costs per month.

Replika. The US App Store lists monthly items at $7.99 and $14.99, annual or yearly items at $49.99 and $69.99, and Replika Platinum at $89.99, without saying which item is which tier. The help centre describes Free Use, Pro, Ultra and Platinum, and says “chatting with Replika will always be free”. It also says there is no free trial right now and that Free Use “may be denied at Replika’s discretion”. Ultra is described as an annual plan. The terms (28 October 2026) do not name any plan. They say plan names “vary by version of the Services, platform, and country”, and that “Basic features of the Services are available free of charge, subject to any usage limits”.

If you would rather not pay at all, the best free AI companion apps guide covers what free accounts get elsewhere.

Voice and calls

• Kindroid says you can chat by text or voice messages and take voice and video calls. Its subscriptions page lists voice calls and video calls as standard subscription features, and audio is metered in credits.
• Nomi offers voice messages and “hands-free” calls, according to its homepage. Nomi’s own comparison article notes voice “has slight latency due to thinking about memories”.
• Replika lists voice calls and video on the App Store. Its help centre puts voice calls behind a subscription, and Pro covers voice messaging, background calls and premium voices.

Content and age rules

All three say users must be 18 or older, and all are rated 18+ on the US App Store.

• Kindroid checks free accounts with a behavioural system that estimates whether a user may be under 18; flagged users must subscribe, start a trial or verify through Yoti. Its moderation guidelines allow adult NSFW content and ban placing any character depicted as a minor in a sexual or abusive context.
• Nomi’s terms say under-18s “cannot use the Nomi.ai platform under any circumstances”. The App Store lists sexual content or nudity as infrequent, managed through in-app controls.
• Replika’s terms bar under-18s (section 6.4) and prohibit content that is “obscene, pornographic” among other things. Its help centre says Pro unlocks a Romantic Partner relationship status and unblurred messages and photos.

Privacy

For a full checklist, see our AI companion privacy and safety guide.

• Kindroid (policy effective 22 October 2026) says chats are “encrypted at rest and in transit” but that “Kindroid is not end-to-end encrypted”, and automated safety systems review content. It says it “will not sell or share your Personal Data”. Chats and memories are kept until you delete them or your account. The pages read do not say whether chats train models. The App Store label lists identifiers and usage data as used to track you.
• Nomi (policy last updated 27 April 2026) says it “do[es] not and will not sell or rent” personal information. Deleting your account removes personal information within about 28 days, except material in “training or communications archives”, which it says would no longer be attributable to you.
• Replika (policy last updated 28 October 2026) says it anonymises “small portions” of messages to train its own safety algorithms and improve performance, that outside AI providers may not train on your data, and that it never uses conversation content for advertising. While your account is open, text chats are kept for 24 months and photos, videos and voice messages for 12 months; profile data is deleted within 60 days of account deletion. Its US state notice says it “sell[s]” and “share[s]” personal information through third parties and tracking technologies, with an opt-out under “Your Privacy Choices”. The App Store label lists identifiers and usage data as used to track you.

Who should pick which

• You want the most control over memory, and will pay for it: Kindroid. It documents its memory layers, gives limits, and sells extra context through Ultra and MAX.
• You want a visible, editable map of what your companion knows: Nomi’s Mind Map, if you can wait the roughly 500 messages Nomi says it takes to form.
• You want the simplest memory you can check and prune: Replika’s Memory tab.
• You want to keep chatting free: Replika, whose help centre says chatting will always be free. Kindroid becomes read-only after its preview.
• You care most about price: Replika’s $7.99 monthly item and Nomi’s $9.99 Launch Plan are below Kindroid’s $15.99.
• Your old app keeps forgetting: see the Character.AI memory fix and Character.AI alternatives, or compare just two in Replika vs Nomi.

Not sure yet? The companion matcher builds a shortlist, and the app hubs collect what has been verified about each app.

What we could not confirm

• Any independent measure of recall for any of the three. No company publishes a benchmark or a token-level context size.
• How much more context Kindroid’s Ultra and MAX tiers add; the subscriptions page gives no figures.
• Whether Nomi’s free and paid accounts get different memory, beyond the 2024 paid backstory limit, and what the Launch Plan leaves out compared with Standard.
• Nomi’s free message limits, and whether Nomi or Kindroid use chats to train their models.
• Which Replika App Store item is Pro, Ultra or Platinum, and whether the Memory tab works the same on free accounts.
• Whether Kindroid lets you delete individual long-term memories, or Nomi lets you delete Mind Map entries.
• Google Play listings and prices outside the US App Store.