doomscroll vs Peras
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
doomscroll
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Turn any GitHub repo into a deck of swipeable code cards. Master codebases through spaced repetition — the same technique used to learn languages, now applied to code. HOW IT WORKS • Paste any public GitHub repo URL • We extract the key functions, types, and patterns • Swipe right if you understand it, left to see it again • Cards resurface using spaced repetition until you master them FEATURES • Supports TypeScript, JavaScript, Python, Rust, Go, and Swift • Syntax-highlighted code cards with context • Three-tier mastery system: unseen → learning → mastered • Streak tracking to build a daily learning habit • Per-repo progress saved locally • Recent repos for quick access • Beautiful dark interface built for focused reading • Haptic feedback on every interaction WHY DOOMSCROLL Reading code is hard. Codebases are overwhelming. doomscroll breaks repos into digestible cards and uses spaced repetition to make the knowledge stick. Swipe right when you get it. Swipe left to see it again. Swipe up to skip. Master a card after 3 correct swipes. All data stays on your device. No accounts, no cloud sync, no tracking.
Peras
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Turn your Goal into a personalized learning path with AI explanations, connected concepts, and visible progress. Start where you are Tell Peras what you want to understand and answer a few questions about your starting point. Your Goal becomes a concept map that shows what to learn next and how ideas connect. Learn one idea at a time Read AI-authored explanations in the Reader. Ask for help when something is unclear and mark familiar ideas as known. Keep your learning connected Save useful explanations, take notes, and pick up where you left off. Explore science, technology, the humanities, languages, business, and more through a Goal that matters to you. Start free Create one Goal map and read an introductory preview of the first Section you choose. Peras Premium is a monthly subscription that lets you continue beyond the preview and keep creating Goal maps and learning content. If you’re eligible, try Premium free for 3 days, then pay the monthly price shown before purchase. Your Apple Account is charged when the trial ends. The subscription renews automatically unless canceled at least 24 hours before the trial or current billing period ends. Manage or cancel it in App Store subscription settings. AI-authored material may be incomplete or inaccurate. Verify important information with authoritative sources. Privacy Policy: https://peras.app/privacy Terms of Use: https://peras.app/terms
Screenshots
Verdict
The clearest difference is in-app purchases: doomscroll at none against Peras's 1. doomscroll also leads on iOS requirement (15.1 vs 18.0). On price, 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
Both are free to download. Peras sells 1 in-app purchase, starting at $7.99 per month. doomscroll asks for nothing beyond the download.
| Parameter | doomscroll | Peras |
|---|---|---|
| Price | Free | Free |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 — better | 18.0 |
| Further details — not scored | ||
| Size | 26 MB | 17 MB |
| Age rating | 4+ | 12+ |
| Developer | Maxwell Young | Emergent System LLC |
In-app purchases
doomscroll
No in-app purchases
Peras
- Peras Premium3 Days trial$7.991 Month









