# Simplex vs Car Maintenance, Fuel Log

The clearest difference is in-app purchases: Simplex at none against Car Maintenance, Fuel Log's 3. Simplex also leads on iOS requirement (9.0 vs 16.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Car Maintenance, Fuel Log sells 3 in-app purchases, starting at $19.99 per year. Simplex asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 4 months. Both last shipped on October 11, 2026.

## The numbers

| Metric | Simplex | Car Maintenance, Fuel Log |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Size | 34 MB | 53 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ACRI](https://appshunter.io/developer/1439465848) | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) |

## What reviewers say

### Simplex

[App page](https://appshunter.io/ios/app/simplex/id1439465849)

**Features:** macOS Compatibility

**In-app purchases:** none


### Car Maintenance, Fuel Log

[App page](https://appshunter.io/ios/app/car-maintenance-fuel-log/id6755032525)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Yearly | $19.99 | per year |
| Premium Monthly | $19.99 | per month |
| Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is Simplex free?

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

### Is Car Maintenance, Fuel Log free?

Car Maintenance, Fuel Log is free to download, with in-app purchases available.

### Do Simplex or Car Maintenance, Fuel Log have ads?

Neither Simplex nor Car Maintenance, Fuel Log shows ads.

### Which is updated more often, Simplex or Car Maintenance, Fuel Log?

Simplex ships an update every 4 months, and Car Maintenance, Fuel Log every 4 months. Most recently, Simplex was updated on October 11, 2026 and Car Maintenance, Fuel Log on October 11, 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.*