# たこさんすうのロックで九九 vs Necol

The clearest difference is ads: Necol at none against たこさんすうのロックで九九's shown. Necol also leads on iOS requirement (10.0 vs 15.6). On price, update cadence, in-app purchases and device support there is nothing between them.

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

たこさんすうのロックで九九 ships an update every 7 months, Necol every 6 months. The most recent releases landed on June 1, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | たこさんすうのロックで九九 | Necol |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/id1162744633/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 6 months** |
| Monetization | — | Free |
| Size | 106 MB | 10 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NSC, K.K.](https://appshunter.io/developer/501890400) | [株式会社風雅](https://appshunter.io/developer/1444846467) |

## What reviewers say

### たこさんすうのロックで九九

[App page](https://appshunter.io/ios/app/id1162744633)

**Features:** macOS Compatibility

**In-app purchases:** none


### Necol

[App page](https://appshunter.io/ios/app/necol/id1444846468)

This app ensures you receive important school communications without being caught by spam filters. It also provides local and disaster information.

**Highlights:** Reliable message delivery, Avoids spam filters, School communications, Local information, Disaster alerts

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is たこさんすうのロックで九九 free?

たこさんすうのロックで九九 is free to download, with no in-app purchases.

### Is Necol free?

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

### Do たこさんすうのロックで九九 or Necol have ads?

たこさんすうのロックで九九 shows ads; Necol does not.

### Which is updated more often, たこさんすうのロックで九九 or Necol?

たこさんすうのロックで九九 ships an update every 7 months, and Necol every 6 months. Most recently, たこさんすうのロックで九九 was updated on June 1, 2026 and Necol on September 13, 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.*