# OI75 vs ShotLog

The clearest difference is device support: OI75 at 3 against ShotLog's 1. OI75 also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. OI75 sells 1 in-app purchase, starting at $7.99 per month and ShotLog sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

OI75 ships an update fortnightly, ShotLog every 10 days. The most recent releases landed on November 9, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | OI75 | ShotLog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 10 days** |
| Size | 15 MB | 4 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [Griff Webshop Kft.](https://appshunter.io/developer/1548662720) | [Stanislav Duplinskiy](https://appshunter.io/developer/1529735040) |

## What reviewers say

### OI75

[App page](https://appshunter.io/ios/app/oi75/id6762751622)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OI75 Club Monthly | $7.99 | per month |


### ShotLog

[App page](https://appshunter.io/ios/app/shotlog-injection-tracker/id6816448401)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ShotLog Pro — 1 Week | $1.99 | per 7 days |
| ShotLog Pro — 3 Months | $16.99 | per 3 months |
| ShotLog Pro — 1 Year | $44.99 | per year |


## Frequently asked questions

### Is OI75 free?

OI75 is free to download, with in-app purchases available.

### Is ShotLog free?

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

### Do OI75 or ShotLog have ads?

Neither OI75 nor ShotLog shows ads.

### Which is updated more often, OI75 or ShotLog?

OI75 ships an update fortnightly, and ShotLog every 10 days. Most recently, OI75 was updated on November 9, 2026 and ShotLog on November 6, 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.*