# Smart Slide Rule vs No DoomScrolling

The clearest difference is price: No DoomScrolling at Free against Smart Slide Rule's $0.99. No DoomScrolling also leads on update cadence (weekly vs every 2 months). Smart Slide Rule's advantage is in-app purchases (none vs 2) and iOS requirement (11.0 vs 18.6). On ads and device support there is nothing between them.

No DoomScrolling is free to download; Smart Slide Rule costs $0.99 up front. No DoomScrolling sells 2 in-app purchases, starting at $1.99 per 7 days. Smart Slide Rule asks for nothing beyond the download.

Smart Slide Rule ships an update every 2 months, No DoomScrolling weekly. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Smart Slide Rule | No DoomScrolling |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/smart-slide-rule/id975047971/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Paid | — |
| Size | 4 MB | 10 MB |
| Requires iOS | **11.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sohta Itoh](https://appshunter.io/developer/965803614) | [MaaDoTaa](https://appshunter.io/developer/488542017) |

## What reviewers say

### Smart Slide Rule

[App page](https://appshunter.io/ios/app/smart-slide-rule/id975047971)

This app simulates a mechanical analog calculating tool, offering various logarithmic scales for multiplication, division, and trigonometric functions. It includes instructions on how to use the slide rule, making it a learning tool for this historical device.

**Highlights:** Simulates a slide rule, Includes A, B, C, CI, D, S, L, T, and K scales, Moveable slide strip and cursor, Instructions on slide rule usage, Calculates multiplication, division, and functions

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

**In-app purchases:** none


### No DoomScrolling

[App page](https://appshunter.io/ios/app/no-doomscrolling-walk2scroll/id6755209829)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $1.99 | per 7 days |
| Monthly Subscription | $4.99 | per month |


## Frequently asked questions

### Is Smart Slide Rule free?

Smart Slide Rule costs $0.99, with no in-app purchases.

### Is No DoomScrolling free?

No DoomScrolling is free to download, with in-app purchases available.

### Do Smart Slide Rule or No DoomScrolling have ads?

Neither Smart Slide Rule nor No DoomScrolling shows ads.

### Which is updated more often, Smart Slide Rule or No DoomScrolling?

Smart Slide Rule ships an update every 2 months, and No DoomScrolling weekly. Most recently, Smart Slide Rule was updated on November 1, 2026 and No DoomScrolling on October 30, 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.*