Comparison

OX | Amp Top Box vs Decibel Display

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

Head to head
About

OX | Amp Top Box

Control your tube amp's legendary tone from anywhere with this companion app. Access a virtual studio of speaker cabinets, microphones, and effects to craft album-quality guitar sounds. Store your custom presets directly to your hardware.

Highlights
  • Full Rig control via Wi-Fi
  • 120+ Rig presets
  • 22 classic speaker cabinets
  • Boutique mic combinations
  • Studio amp tone effects
  • Custom preset storage
Read full description

Legendary Album Tone from your Tube Amp — Anywhere, at Any Volume. This is the companion application for OX Amp Top Box by Universal Audio. Install the Rig Control app on your iPad or computer, then pair over Wi-Fi to your OX hardware and tap into a full virtual studio of speaker cabinets, microphones, and effects for getting legendary amp tones. Features • Full control of OX Amp Top Box Rigs via Wi-Fi on iPad, macOS, and Windows • Access 120+ carefully-crafted Rig presets for instant album-quality guitar tones • Choose from 22 classic speaker cabinets with vintage, NOS, and modern speakers • Choose from 7 boutique close mic and 6 room mic combinations • Perfect your studio amp tones with EQ, Compression, Delay, and Plate Reverb • Store your custom presets to OX’s RIG knob Requirements • OX Amp Top Box Hardware • Internet connection via Wi-Fi for OX hardware registration • iPad with iOS 12 or higher

About

Decibel Display

This companion app displays audio metering data from its desktop counterpart on your smartphone or tablet. Design custom multi-meter presets with various meter types, colors, and shapes for real-time audio analysis.

Highlights
  • Real-time audio metering
  • Customizable meter presets
  • VU Meter, LUFS, RMS
  • Spectrum Analyzer
  • Phase-scope
  • Modular design
Features
Read full description

Decibel Display app is only a viewer, it works with Decibel Desktop which is an audio Plug-in (VST3, AAX, AU) and standalone app (Mac, Windows) that can be broadcast to any smartphone or tablet device using this app. It is a modular multi-meter on which you can design the preset you want including color, size, shape, choosing between several VU Meter, LUFS Meters, RMS Meter, Spectrum Analyser, Phase-scope and so on.

Screenshots

Decibel Display2 screens

Verdict

The call

The clearest difference is rating: Decibel Display at 4.3 against OX | Amp Top Box's 3.7. Decibel Display also leads on ads (none vs shown) and update cadence (every 5 weeks vs every 5 months). On price, review sentiment, ratings volume and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Decibel Display holds the better App Store score, 4.3 against 3.7. Both are backed by a comparable volume of ratings — 22 and 11 respectively. Written reviews point the same way: 38% of OX | Amp Top Box's written reviews are positive against 40% of Decibel Display's.

UpkeepUpdate frequency

OX | Amp Top Box ships an update every 5 months, Decibel Display every 5 weeks. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

Scorecard5 real differences · 5 level
OX | Amp Top Box versus Decibel Display: the parameters behind the verdict, then further details
ParameterOX | Amp Top BoxDecibel Display
PriceFreeFree
Rating3.7 (22 ratings)4.3 (11 ratings) — better
Positive reviews37.5% of reviews40.0% of reviews — better
Number of ratings22 — better11
Update frequencyEvery 5 monthsEvery 5 weeks — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPadiPhone, iPad, iPod — better
Requires iOS12.0 — better13.0
Further details — not scored
Size71 MB12 MB
Age rating4+4+
DeveloperUniversal AudioProcess Audio

Customer experience

OX | Amp Top Box

All ratings20 ratings
Positive70.0%
Neutral0.0%
Negative30.0%
Written reviews16 reviews
Positive37.5%
Neutral0.0%
Negative62.5%

Decibel Display

All ratings11 ratings
Positive81.8%
Neutral0.0%
Negative18.2%
Written reviews5 reviews
Positive40.0%
Neutral0.0%
Negative60.0%

In-app purchases

None

OX | Amp Top Box

No in-app purchases

None

Decibel Display

No in-app purchases

Questions

Is OX | Amp Top Box free?
OX | Amp Top Box is free to download, with no in-app purchases.
Is Decibel Display free?
Decibel Display is free to download, with no in-app purchases.
Which has better reviews, OX | Amp Top Box or Decibel Display?
Decibel Display is rated higher. OX | Amp Top Box averages 3.7 out of 5 from 22 ratings, while Decibel Display averages 4.3 from 11 ratings.
Do OX | Amp Top Box or Decibel Display have ads?
OX | Amp Top Box shows ads; Decibel Display does not.
Which is updated more often, OX | Amp Top Box or Decibel Display?
OX | Amp Top Box ships an update every 5 months, and Decibel Display every 5 weeks. Most recently, OX | Amp Top Box was updated on October 24, 2026 and Decibel Display on October 26, 2026.

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