# Secret Agent London vs On Constant Delay

The clearest difference is rating: On Constant Delay at 5.0 against Secret Agent London's 4.1. On Constant Delay also leads on update cadence (daily vs weekly). Secret Agent London's advantage is ratings volume (14 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On Constant Delay holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Secret Agent London has 14 ratings behind it against 1, so its average is the more settled of the two.

Secret Agent London ships an update weekly, On Constant Delay daily. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Secret Agent London | On Constant Delay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (14 ratings)](https://appshunter.io/ios/app/secret-agent-london-document/id1048880460/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/on-constant-delay/id6758518252/reviews)** |
| Number of ratings | **14** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Daily** |
| Monetization | Free | Free |
| Size | 52 MB | 211 MB |
| Requires iOS | 15.1 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 12+ |
| Developer | [Efe Sar](https://appshunter.io/developer/1048880459) | [Narrativi Digitali](https://appshunter.io/developer/1873298749) |

## What reviewers say

### Secret Agent London

[App page](https://appshunter.io/ios/app/secret-agent-london-document/id1048880460)

Embark on a thrilling spy adventure in London, solving puzzles and cracking codes across six unique missions. Experience action-packed gameplay with video clues and challenging mini-games to save the world.

**Highlights:** 6 unique missions and puzzle types, Video-based mission briefings, Phone keypad code-cracking, Parachute mini-game, Hidden video codes, Challenging line puzzle

**Features:** macOS Compatibility

**In-app purchases:** none


### On Constant Delay

[App page](https://appshunter.io/ios/app/on-constant-delay/id6758518252)

This narrative game immerses players in the daily challenges of living with Obsessive-Compulsive Disorder (OCD). Experience scenarios that trigger symptoms and gain empathy for those affected. The game aims to raise awareness and reduce stigma.

**Highlights:** Narrative-driven gameplay, Explores OCD struggles, Raises awareness, Challenges stigma, Fosters empathy

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Secret Agent London free?

Secret Agent London is free to download, with no in-app purchases.

### Is On Constant Delay free?

On Constant Delay is free to download, with no in-app purchases.

### Which has better reviews, Secret Agent London or On Constant Delay?

On Constant Delay is rated higher. Secret Agent London averages 4.1 out of 5 from 14 ratings, while On Constant Delay averages 5.0 from 1 ratings.

### Do Secret Agent London or On Constant Delay have ads?

Neither Secret Agent London nor On Constant Delay shows ads.

### Which is updated more often, Secret Agent London or On Constant Delay?

Secret Agent London ships an update weekly, and On Constant Delay daily. Most recently, Secret Agent London was updated on October 24, 2026 and On Constant Delay on October 28, 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.*