# StackLock vs iGPT

The clearest difference is in-app purchases: iGPT at none against StackLock's 1. iGPT also leads on rating (5.0 vs 4.5) and device support (4 vs 2). StackLock's advantage is update cadence (every 2 days vs every 10 days) and ratings volume (74 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. StackLock sells 1 in-app purchase, starting at $14.99 per month. iGPT asks for nothing beyond the download.

iGPT holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: StackLock has 74 ratings behind it against 1, so its average is the more settled of the two.

StackLock ships an update every 2 days, iGPT every 10 days. The most recent releases landed on July 21, 2026 and September 4, 2026 respectively.

## The numbers

| Metric | StackLock | iGPT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (74 ratings)](https://appshunter.io/ios/app/stacklock/id1665649854/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/igpt-ai-email-intelligence/id6741868157/reviews)** |
| Number of ratings | **74** | 1 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 10 days |
| Monetization | Free with in-app purchases | **Free** |
| Size | 10 MB | 15 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Roman Dorovenko](https://appshunter.io/developer/1680221317) | [SpikeNow Ltd.](https://appshunter.io/developer/491044400) |

## What reviewers say

### StackLock

[App page](https://appshunter.io/ios/app/stacklock/id1665649854)

Securely store and manage all your passwords, private notes, and photos across your devices. Generate strong passwords, access your information conveniently, and protect your data with advanced safety features.

**Highlights:** Secure password storage, Unlimited password creation, Cross-device synchronization, Secure notes and photo storage, Password generation, FaceDown look and fake passcode

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Month | $14.99 | per month |


### iGPT

[App page](https://appshunter.io/ios/app/igpt-ai-email-intelligence/id6741868157)

This AI-powered tool connects to your email, documents, and other work tools to provide context-rich answers and insights. It helps you make faster, smarter decisions by understanding your work and offering verifiable information with source citations.

**Highlights:** Connects to email, docs, and tools, Provides context-rich answers, Source citations for verifiable truth, Proactive insights on tasks and meetings, Enterprise-grade privacy (SOC2, GDPR compliant), No file uploads or complex prompts needed

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is StackLock free?

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

### Is iGPT free?

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

### Which has better reviews, StackLock or iGPT?

iGPT is rated higher. StackLock averages 4.5 out of 5 from 74 ratings, while iGPT averages 5.0 from 1 ratings.

### Do StackLock or iGPT have ads?

Neither StackLock nor iGPT shows ads.

### Which is updated more often, StackLock or iGPT?

StackLock ships an update every 2 days, and iGPT every 10 days. Most recently, StackLock was updated on July 21, 2026 and iGPT on September 4, 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.*