Comparison

AiAlmace vs Decibel

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

AiAlmace

Features
Read full description

AiAlmace is a software to consult AiAlmace dictionaries. With AiAlmace you can consult a full encoding dictionary like as TCAF (Tableau de conjugaison de l'ancien français, Machio OKADA et Hitoshi OGURISU); in this dictionary you can search every part of dictionary (all the verbal forms). With AiAlmace you can also consult an image based dictionary like as VanDaele; in this dictionary you can search only the headwords and their variantes, but all of them are linked with the page where they appears. So you can easily get the page you want to see. If you look up "amor", you can get the image of the page where this word appears as head word. Differently from a full encoding dictionary, an image based dictionaries has very simple structure. If you examine carefully the structure of "VanDaele", you will be able to make you own dictionary by yourself. Be careful: To use AiAlmace you have to download a (gratuitous) dictionary at http://www.eonet.ne.jp/~ogurisu/AiSeries.html and install it via iTunes' file sharing.

About

Decibel

This application offers noise detection and measurement capabilities, providing reference data for sound levels anytime, anywhere. It also includes location tagging for detection points and allows for the export of audio files for sharing. While it aims for accuracy, it is intended for private reference and cannot fully replace professional equipment.

Highlights
  • Noise detection
  • Reference measurement data
  • Detection point location
  • Audio file export
  • Private reference tool
Features
Read full description

The decibel tester App can provide you with noise detection reference anytime, anywhere, and also provide detection point location information. You can also export audio files for sharing at any time. Although we provide as accurate measurement data as possible, this App still cannot completely replace professional measurement equipment and is tightly used for private reference.

Screenshots

AiAlmace4 screens
Decibel4 screens

Verdict

The call

The clearest difference is in-app purchases: AiAlmace at none against Decibel's 4. AiAlmace also leads on ads (none vs shown). Decibel's advantage is update cadence (every 9 days vs every 28 months) and iOS requirement (13.0 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Decibel sells 4 one-off in-app purchases. AiAlmace asks for nothing beyond the download.

UpkeepUpdate frequency

AiAlmace ships an update every 28 months, Decibel every 9 days. The most recent releases landed on October 21, 2026 and October 29, 2026 respectively.

Scorecard4 real differences · 6 level
AiAlmace versus Decibel: the parameters behind the verdict, then further details
ParameterAiAlmaceDecibel
PriceFreeFree
Rating—4.7 (298 ratings) — better
Positive reviews—75.0% of reviews
Number of ratings—298 — better
Update frequencyEvery 28 monthsEvery 9 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size94 MB7 MB
Age rating4+4+
DeveloperHitoshi Ogurisu文智 洪

In-app purchases

None

AiAlmace

No in-app purchases

4 purchases

Decibel

One-time4
  • Small Support$0.99
  • Ad removal service.$1.99
  • Warm Support$2.99
Show 1 more
  • Generous Support$4.99

Questions

Is AiAlmace free?
AiAlmace is free to download, with no in-app purchases.
Is Decibel free?
Decibel is free to download, with in-app purchases available.
Do AiAlmace or Decibel have ads?
Decibel shows ads; AiAlmace does not.
Which is updated more often, AiAlmace or Decibel?
AiAlmace ships an update every 28 months, and Decibel every 9 days. Most recently, AiAlmace was updated on October 21, 2026 and Decibel on October 29, 2026.

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