Comparison

BlueKeyDetect vs AxeChords

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

Head to head
About

BlueKeyDetect

Instantly identify the musical key and tempo of songs by recording short audio clips. Ideal for musicians in jam sessions needing quick key information.

Highlights
  • Record audio clips
  • Detect musical key
  • Display beats per minute (BPM)
  • Supports guitar and bass jam sessions
  • Multiple recording options for accuracy
Read full description

If you are part of a jam sessions with guitar or bass, you should know the key in which the others are playing. The pros among you may be able to hear that, but I either need the information from the chord sheet or someone knows the key ... As a programmer, I quickly have an app in mind simply recording a piece of a song and then recognizing the key via my iPhone. The result is the BlueKeyDetect app: One touch on the display plus a short piece of recording and the beats per minute with the key of the song are displayed. You should record short pieces several times or a slightly longer one to get the correct key displayed. There are limits, since the key in the song can also change and depending on the song, the recognition can be difficult anyway, but in practice it still works quite well if you take a few things into account: ① Find places in the song where there is a lot of sound. Drums and percussion don't do much to recognize the key. ② The longer you record the song, the greater the chances of recognizing the correct key. Alternatively, you can record short phrases several times and then choose the most detected key. ③ Background noise makes detection difficult, so if possible record only the song and not at a low level.

About

AxeChords

Read full description

Learn all the basic Major and Minor Chords on Guitar using the CAGED System. (A system based on the open C, A, G, E, and D chords). Learn the foundation of all Jazz Chords with Shell Chords. (Root, 3rd, 7th). Master advanced Chords and their Inversions with Drop 2 and Drop 3 Chords. (2nd or 3rd highest note of a closed position Chord dropped an octave to spread out the voicing). Select any of 12 different Root Notes for each chord form, providing thousands of different combinations! Shows the scale degree of each chord note, as well as the suggested fingerings for each chord. Play each chord to hear how it sounds, choose from several different guitar types with strummed or picked chords. Context sensitive help available on each screen. Plus, you can also add your own custom User Chords!

Screenshots

BlueKeyDetect4 screens
AxeChords4 screens

Verdict

The call

The clearest difference is update cadence: AxeChords at every 3 days against BlueKeyDetect's every 8 months. BlueKeyDetect's advantage is price ($0.99 vs $1.99) and iOS requirement (10.0 vs 16.2). On ads, in-app purchases 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

BlueKeyDetect costs $0.99 and AxeChords $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

BlueKeyDetect ships an update every 8 months, AxeChords every 3 days. The most recent releases landed on October 13, 2026 and October 4, 2026 respectively.

Scorecard3 real differences · 6 level
BlueKeyDetect versus AxeChords: the parameters behind the verdict, then further details
ParameterBlueKeyDetectAxeChords
Price$0.99 — better$1.99
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 8 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS10.0 — better16.2
Further details — not scored
Size15 MB5 MB
Age rating4+4+
DeveloperStefan ArnholdJoseph Svantner

In-app purchases

None

BlueKeyDetect

No in-app purchases

None

AxeChords

No in-app purchases

Questions

Is BlueKeyDetect free?
BlueKeyDetect costs $0.99, with no in-app purchases.
Is AxeChords free?
AxeChords costs $1.99, with no in-app purchases.
Do BlueKeyDetect or AxeChords have ads?
Neither BlueKeyDetect nor AxeChords shows ads.
Which is updated more often, BlueKeyDetect or AxeChords?
BlueKeyDetect ships an update every 8 months, and AxeChords every 3 days. Most recently, BlueKeyDetect was updated on October 13, 2026 and AxeChords on October 4, 2026.

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