# Persimmon vs Thesis Planner

The clearest difference is price: Persimmon at Free against Thesis Planner's $6.99. Persimmon also leads on in-app purchases (none vs 3). Thesis Planner's advantage is update cadence (every 6 days vs every 3 weeks). On ads, device support and iOS requirement there is nothing between them.

Persimmon is free to download; Thesis Planner costs $6.99 up front. Thesis Planner sells 3 in-app purchases, starting at $0.99 per month. Persimmon asks for nothing beyond the download.

Persimmon ships an update every 3 weeks, Thesis Planner every 6 days. The most recent releases landed on October 15, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Persimmon | Thesis Planner |
| --- | --- | --- |
| Price | **Free** | $6.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/persimmon-research-simplified/id6747952930/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | Free | — |
| Size | 23 MB | 13 MB |
| Requires iOS | **18.1** | 18.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Momenta Lab LLC](https://appshunter.io/developer/1615879512) | [Davut YILMAZ](https://appshunter.io/developer/1895399420) |

## What reviewers say

### Persimmon

[App page](https://appshunter.io/ios/app/persimmon-research-simplified/id6747952930)

This app simplifies complex scientific research papers from arXiv and SocArXiv using AI. It offers customizable summaries tailored to your expertise level and allows you to search, save, and get daily updates on new publications. You can also use it as a basic preprint browser without AI.

**Highlights:** AI-powered paper summaries, Customizable AI models and expertise levels, Search arXiv and SocArXiv, Save papers for offline access, Daily updates and notifications, Privacy-focused, no data collection

**Features:** macOS Compatibility

**In-app purchases:** none


### Thesis Planner

[App page](https://appshunter.io/ios/app/thesis-planner/id6763615059)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $0.99 | per month |
| Yearly Premium | $9.99 | per year |
| Thesis Planner Unlock | $4.99 | one-time |


## Frequently asked questions

### Is Persimmon free?

Persimmon is free to download, with no in-app purchases.

### Is Thesis Planner free?

Thesis Planner costs $6.99, and also offers in-app purchases.

### Do Persimmon or Thesis Planner have ads?

Neither Persimmon nor Thesis Planner shows ads.

### Which is updated more often, Persimmon or Thesis Planner?

Persimmon ships an update every 3 weeks, and Thesis Planner every 6 days. Most recently, Persimmon was updated on October 15, 2026 and Thesis Planner on October 17, 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.*