# Proof ERP vs Grade Tracker Planner

The clearest difference is in-app purchases: Proof ERP at none against Grade Tracker Planner's 3. Proof ERP also leads on iOS requirement (15.6 vs 18). Grade Tracker Planner's advantage is update cadence (every 5 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Grade Tracker Planner sells 3 in-app purchases, starting at $4.99 per month. Proof ERP asks for nothing beyond the download.

Proof ERP ships an update every 2 months, Grade Tracker Planner every 5 weeks. The most recent releases landed on September 23, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Proof ERP | Grade Tracker Planner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Size | 104 MB | 4 MB |
| Requires iOS | **15.6** | 18 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [NLET](https://appshunter.io/developer/1570619872) | [Karol Jaworski](https://appshunter.io/developer/1799974477) |

## What reviewers say

### Proof ERP

[App page](https://appshunter.io/ios/app/proof-erp/id6737055927)

**Features:** macOS Compatibility

**In-app purchases:** none


### Grade Tracker Planner

[App page](https://appshunter.io/ios/app/grade-tracker-planner-slate/id6760373420)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Slate Pro Monthly | $4.99 | per month |
| Slate Pro Yearly - Intro Offer | $39.99 | per year |
| Slate Pro Yearly | $39.99 | per year |


## Frequently asked questions

### Is Proof ERP free?

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

### Is Grade Tracker Planner free?

Grade Tracker Planner is free to download, with in-app purchases available.

### Do Proof ERP or Grade Tracker Planner have ads?

Neither Proof ERP nor Grade Tracker Planner shows ads.

### Which is updated more often, Proof ERP or Grade Tracker Planner?

Proof ERP ships an update every 2 months, and Grade Tracker Planner every 5 weeks. Most recently, Proof ERP was updated on September 23, 2026 and Grade Tracker Planner 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.*