Comparison

Eris. vs Keepstack

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Eris.

Experience private AI conversations entirely on your device. This app offers offline access to multiple AI models, ensuring your data never leaves your iPhone or iPad. Enjoy fast, secure AI assistance without internet connectivity or subscriptions.

Highlights
  • 100% Private conversations
  • No internet required
  • Multiple AI models supported
  • Optimized for Apple Silicon
  • One-time download, use forever
  • Dark Mode support
  • Haptic feedback
Features
Read full description

Eris brings the power of AI conversation to your iPhone and iPad while keeping your privacy intact. Unlike cloud-based AI assistants, Eris runs entirely on your device using Apple's cutting-edge MLX framework. KEY FEATURES: • 100% Private - All conversations stay on your device • No Internet Required - Chat with AI completely offline • Multiple AI Models - Choose from Llama, Qwen, DeepSeek, and more • Lightning Fast - Optimized for Apple Silicon performance • No Subscriptions - One-time download, use forever • Dark Mode Support - Easy on your eyes • Haptic Feedback - Tactile responses for better interaction SUPPORTED MODELS: • Llama 3.2 (1B, 3B) - Meta's efficient language models • Qwen 2.5 Series - Multilingual capabilities • DeepSeek R1 - Advanced reasoning • Gemma 2, Phi 3.5, Mistral - Various specialized models • Code Models - For programming assistance PRIVACY FIRST: Your conversations never leave your device. No cloud servers, no data collection, no tracking. What you say to Eris stays with Eris. REQUIREMENTS: • iPhone XS/XR or newer (A12 chip required) • iOS 17.6 or later • 2-8GB storage per model Perfect for users who want AI assistance without compromising privacy. Whether you're brainstorming ideas, getting help with code, or just having a conversation, Eris is your private AI companion. Note: First launch includes a one-time model download. Models are stored locally for offline use.

About

Keepstack

Features
Read full description

Stop losing the things you save. Keepstack is the private, AI-powered home for everything worth keeping — links, notes, photos, screenshots, videos, voice memos, and PDFs — and it actually helps you find them again. SAVE ANYTHING, FROM ANYWHERE • Share from any app — Safari, social media, Photos — straight into your stack • Write quick notes, paste links, import photos and screenshots, record voice memos, or add videos and PDFs in one tap • Saved web pages keep their title, picture, and full text — readable and searchable even if the page disappears • Add your own note to anything you save — a link, a photo, a PDF AI THAT WORKS FOR YOU (AND STAYS ON YOUR IPHONE) • Reads the text inside your screenshots automatically • Transcribes your voice memos so you can read and search them • Writes key-point summaries of the pages you save • Tags and sorts everything into smart categories — Recipes, Travel, Finance, Tech, and more ORGANIZE YOUR WAY • Group saves into collections — pick a color or give each folder its own emoji • Lock private collections with Face ID • Browse as beautiful cards or a compact list, your choice • Six content types in one calm, beautiful library FIND IT BY MEANING, NOT JUST WORDS • Search understands what you mean — "that pasta sauce" finds the recipe even if those words aren't in it • Even the words inside your screenshots and voice memos are searchable • Your saves appear in iPhone Spotlight search too PRIVATE BY DESIGN • No account. No tracking. No ads. • All AI runs on your device using Apple frameworks — your content never leaves your iPhone • Optional iCloud sync, encrypted under your own Apple ID KEEPSTACK PRO Save up to 50 items free. Go Pro for unlimited saves with a simple subscription — monthly or yearly. Payment is charged to your Apple ID account. Subscriptions renew automatically unless cancelled at least 24 hours before the period ends. Manage or cancel anytime in Settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://snrgwa-bot.github.io/Keepstack/privacy.html

Screenshots

Eris.4 screens
Keepstack4 screens

Verdict

The call

The clearest difference is in-app purchases: Eris. at none against Keepstack's 2. On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Keepstack sells 2 in-app purchases, starting at $5.99 per month. Eris. asks for nothing beyond the download.

UpkeepUpdate frequency

Eris. ships an update every 2 weeks, Keepstack every 3 weeks. The most recent releases landed on October 2, 2026 and October 4, 2026 respectively.

Scorecard1 real difference · 9 level
Eris. versus Keepstack: the parameters behind the verdict, then further details
ParameterEris.Keepstack
PriceFreeFree
Rating4.3 (6 ratings) — better—
Positive reviews80.0% of reviews—
Number of ratings6 — better—
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.0 — better
Further details — not scored
Size34 MB5 MB
Age rating4+4+
DeveloperIgnacio PalacioDUMITRU BUMBU

In-app purchases

None

Eris.

No in-app purchases

2 purchases

Keepstack

Subscriptions2
  • Pro Annual$5.991 Month
  • Pro Annual$59.991 Year

Questions

Is Eris. free?
Eris. is free to download, with no in-app purchases.
Is Keepstack free?
Keepstack is free to download, with in-app purchases available.
Do Eris. or Keepstack have ads?
Neither Eris. nor Keepstack shows ads.
Which is updated more often, Eris. or Keepstack?
Eris. ships an update every 2 weeks, and Keepstack every 3 weeks. Most recently, Eris. was updated on October 2, 2026 and Keepstack on October 4, 2026.

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