# MemSurf vs Bias Handbook

The clearest difference is price: MemSurf at Free against Bias Handbook's $0.99. MemSurf also leads on update cadence (every 8 days vs every 3 weeks). Bias Handbook's advantage is in-app purchases (none vs 7) and ads (none vs shown). On device support there is nothing between them.

MemSurf is free to download; Bias Handbook costs $0.99 up front. MemSurf sells 7 in-app purchases, starting at $9.99 per month. Bias Handbook asks for nothing beyond the download.

MemSurf ships an update every 8 days, Bias Handbook every 3 weeks. The most recent releases landed on October 30, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | MemSurf | Bias Handbook |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/memsurf-adaptive-learning/id6745132314/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 237 MB | 2 MB |
| Requires iOS | 26 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [Sehajroop Singh](https://appshunter.io/developer/1810928916) | [Stepapp, Inc.](https://appshunter.io/developer/1584132042) |

## What reviewers say

### MemSurf

[App page](https://appshunter.io/ios/app/memsurf-adaptive-learning/id6745132314)

This app transforms your collected notes into personalized lessons and daily exercises to enhance knowledge retention. It adapts to your learning speed and goals, helping you build long-term understanding and recall.

**Highlights:** Bespoke lessons from your notes, Short daily exercises, Science-based spaced repetition, Personalized learning goals, Sprint and deadline modes, Habit-building streaks

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $9.99 | per month |
| Pro Yearly | $95.99 | per year |
| Tiny Boost | $0.99 | one-time |
| AI Credits Small Boost | $2.99 | one-time |
| Purchase Gems | $4.99 | one-time |
| AI Credits Medium Boost | $6.99 | one-time |
| AI Credits Heavy Boost | $12.99 | one-time |


### Bias Handbook

[App page](https://appshunter.io/ios/app/bias-handbook/id6767604061)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is MemSurf free?

MemSurf is free to download, with in-app purchases available.

### Is Bias Handbook free?

Bias Handbook costs $0.99, with no in-app purchases.

### Do MemSurf or Bias Handbook have ads?

MemSurf shows ads; Bias Handbook does not.

### Which is updated more often, MemSurf or Bias Handbook?

MemSurf ships an update every 8 days, and Bias Handbook every 3 weeks. Most recently, MemSurf was updated on October 30, 2026 and Bias Handbook on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*