Pest Repel vs libretto42
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pest Repel
This app emits ultra-high frequency sounds designed to deter mosquitoes, wasps, and spiders. It also offers educational facts about these insects and includes a range booster function as an in-app purchase.
- Ultra-high frequency sound emission
- Deters mosquitoes, wasps, and spiders
- Educational insect facts
- Range Booster function (in-app purchase)
- Works on iPhone and iPad
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Disclaimer * Please do not use this app with headphones connected or near children or pets.* PestRepeller is a gentle, effective way to remove Mosquito's, Wasps & Spiders from your location! By emitting an ultra-high frequency sound, barely audible to the human ear (some humans may not even hear due to the pitch of the sound being so high!) PestRepeller provides the sound that these insects do not like, and may ward these pesky creatures away from you! This app also contains educational facts about Mosquitos, Spiders and Wasps, to gain an insight into these insects and learn and understand their habits. Featuring Range Booster function for increased range** Disclaimer; *This app will only work when it is NOT in Silent/Vibrate only mode* **This app MAY work on other insects, however results are not guaranteed* Please do not use this app with headphones connected or near children or pets. ** Range boost function is available as an in-app purchase upgrade.
libretto42
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Does the theatre, opera or musical performance you attend offer subtitles via the libretto42 app? Just scan the QR code the venue provides and read along to the performance in real time. You can get additional information about the play, and switch between the provided translations. Use your headphones, if you wish to listen to the subtitles with the text-to-speech option. A stable internet connection is required. The app itself is available in English and German. The availability and number of the subtitle languages depends on the performance organisers.
Screenshots
Verdict
The clearest difference is in-app purchases: libretto42 at none against Pest Repel's 1. libretto42 also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 5 months). Pest Repel's advantage is iOS requirement (12.4 vs 15.0). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Pest Repel sells 1 one-off in-app purchase. libretto42 asks for nothing beyond the download.
Pest Repel ships an update every 5 months, libretto42 every 3 weeks. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.
| Parameter | Pest Repel | libretto42 |
|---|---|---|
| Price | Free | Free |
| Rating | 2.2 (6 ratings) — better | — |
| Positive reviews | 13.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 5 months | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.4 — better | 15.0 |
| Further details — not scored | ||
| Size | 48 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | iDevver Apps Limited | Lemon42 IT, Web und Software GmbH |
In-app purchases
Pest Repel
- PestRepeller - Upgrade$1.99
libretto42
No in-app purchases
