By HannahDream Editorial Team · Product editorial team
An AI companion can refer to a recent message without saving it as a lasting memory. Before choosing an app, check which details are saved, whether you control them, and whether those details are used after a new session—especially when seeking a realistic AI girlfriend or engaging in an immersive AI dating sim.
Disclosure: HannahDream publishes this guide and describes its own implementation below. If you want to evaluate conversational recall firsthand, try our AI girlfriend chat with memory. This is a practical evaluation checklist, not an independent benchmark or a ranking based on measured recall accuracy. We have not run the same controlled test across the products linked here.
Sources and further reading
Recent context and saved memory are different
Recent context is the conversation text supplied to a model for a reply. Saved memory is a separate fact that may be selected for a later prompt. A product can use either or both; the public homepage alone does not establish its underlying database or retrieval architecture.
Do not infer a competitor’s vector database, graph structure, retention duration or deletion guarantees from marketing descriptions. Use official documentation for published controls and record your own observations separately.
Questions to compare before paying
| Question | What to inspect | What remains unproven |
|---|---|---|
| Can I see saved facts? | Open the product’s memory controls and inspect a harmless preference | A visible dashboard does not establish recall accuracy |
| Is confirmation required? | Check whether a suggested fact is used before consent | A suggested fact is not a confirmed memory |
| Can I correct or delete it? | Change the fact, then test a subsequent reply | Removing prompt eligibility is different from deleting every historical backup |
| Is memory isolated? | Use separate fictional companions and check their controls | A single successful reply does not prove complete isolation |
| Will it work next session? | Repeat a neutral question after signing out and returning | One successful recall is not a long-term accuracy score |
How HannahDream currently uses memory
HannahDream extracts structured candidates from reviewed exchanges. Candidates are pending until you confirm them. Confirmed, undeleted facts for that account and companion can be included in later prompts; rejected or deleted facts are not selected as saved memories.
The current storage is relational records in Cloudflare D1. We do not claim a knowledge graph, an industry-leading recall rate, or perfect recollection. The model can still make mistakes, and recent conversation text can still contain a detail after its separate saved-memory record is deleted.
The public trial uses the same candidate-and-confirmation principle. You can explicitly save the trial conversation and memory choices to an authenticated account within 24 hours, subject to that companion’s plan access. Free includes Hannah; other companions require a matching paid plan.
A repeatable, non-sensitive memory check
- Share an ordinary preference such as a favorite music genre. Avoid health, financial, identity or other sensitive information.
- Inspect the candidate and confirm only if its wording is accurate. Record the exact saved fact.
- Discuss another subject for a few turns, then ask a neutral question that could use the preference. Record whether the reply is correct, incorrect or does not use it.
- Return in a new session and repeat. Delete the saved fact and check that it disappears from memory controls. Test deletion separately from recent-history recall.
How to document a fair comparison
For each product, record the date, plan, model or mode if visible, prompts, consent settings, number of repeated runs and observed answers. Separate official claims from your results and unknowns. Check the current pricing and policies on each official site before buying.
Nomi’s public positioning includes broad relationship freedom and memory; its boundaries should be checked on its official site. This guide does not describe it as having HannahDream’s non-explicit policy or assign an unpublished architecture to it.
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