# SUM+= Simple Expense Tracker vs Fynn

The clearest difference is in-app purchases: Fynn at none against SUM+= Simple Expense Tracker's 4. SUM+= Simple Expense Tracker's advantage is update cadence (every 3 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SUM+= Simple Expense Tracker sells 4 in-app purchases, starting at $3.99 per month. Fynn asks for nothing beyond the download.

SUM+= Simple Expense Tracker ships an update every 3 days, Fynn every 2 months. The most recent releases landed on September 2, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | SUM+= Simple Expense Tracker | Fynn |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 months |
| Monetization | Freemium | — |
| Size | 26 MB | 35 MB |
| Requires iOS | 26.2 | **26.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jonas Zimmermann](https://appshunter.io/developer/1869111182) | [Alessio Rubicini](https://appshunter.io/developer/1821488857) |

## What reviewers say

### SUM+= Simple Expense Tracker

[App page](https://appshunter.io/ios/app/sum-plus-simple-expense-tracker/id6757820811)

This finance app simplifies expense tracking with AI assistance, allowing for quick data entry and powerful analysis through large language models. It prioritizes user control and privacy with local data storage and a minimalist design.

**Highlights:** AI-assisted data entry, LLM analysis and forecasting, Minimalist and beautiful design, Local data storage and privacy, User-controlled database, Subscription options with free trial

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SUM Pro | $3.99 | per month |
| SUM Pro | $22.99 | per year |
| 7-day Trial | Free | one-time |
| Sum Premium | $6.99 | one-time |


### Fynn

[App page](https://appshunter.io/ios/app/fynn-expense-tracker/id6758525384)

**In-app purchases:** none


## Frequently asked questions

### Is SUM+= Simple Expense Tracker free?

SUM+= Simple Expense Tracker is free to download, with in-app purchases available.

### Is Fynn free?

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

### Do SUM+= Simple Expense Tracker or Fynn have ads?

Neither SUM+= Simple Expense Tracker nor Fynn shows ads.

### Which is updated more often, SUM+= Simple Expense Tracker or Fynn?

SUM+= Simple Expense Tracker ships an update every 3 days, and Fynn every 2 months. Most recently, SUM+= Simple Expense Tracker was updated on September 2, 2026 and Fynn on September 9, 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.*