Comparison

Selcall Selective Calling Tone vs Dialnostics

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

Head to head
About

Selcall Selective Calling Tone

Generate various selective calling tones for communication. Choose from over 20 tone types, queue multiple tones for burst transmission, and customize tone durations and gaps. Store frequently used sequences for quick access.

Highlights
  • Over 20 tone types
  • Tone queuing and burst transmission
  • Customizable tone duration and gap
  • Memory for storing tone sequences
  • CTCSS continuous tone generation
  • CODAN mode for priority calls
Features
Read full description

SelCall generates Selective Calling Tones. Select your tone type from the extensive selection of available modes, then touch the button for each tone you wish to send. You can even queue up tones and have them sent in a burst, if you wish. The following tone types can be generated: DTMF CCIR1 CCIR7 PCCIR EIA EEA CCITT EURO NATEL VDEW MODAT ZVEI1 ZVEI2 ZVEI3 PZVEI DZVEI PDZVEI ICAO ICAO SELCALL 32 CTCSS CODAN Touch the button on the upper right corner to get a list of SelCall tone modes, and select the mode you wish to use. Then touch the button for each tone you wish to generate. If you turn the switch off, you can queue up several tones (they will be displayed to the left of the switch) and then turn the switch back on to play them. Any tones that you played by turning the switch on can be repeated by tapping the RPT/Repeat button. You can also store commonly used tone sequences. Tap on the Mem button to bring of the list of memory entries, which will by empty at first. To add an entry, tap the Edit button, then the green plus sign to add an entry, which will get a default name of Untitled. Tap Done, then tap on the Untitled entry to edit it. You can change the name, as well as the tone keys to be sent. To send an entry, tap the send button. It will be sent (or stored in the buffer if the switch is off). It will also be placed in the repeat buffer, so you can tap RPT/Repeat to re-send it. The duration of tones and gap between them can be customized for most modes. Enter the values in milliseconds. The maximum allowed values are 500 milliseconds. In CTCSS mode, touch the button for the tone that you wish to continuously generate. There is a switch which turns the tone on and off, and when on, the tone will continuously play, even when you switch to another tone mode, so you can combine CTCSS with other tone modes. In CODAN mode, adjust the center frequency if necessary, select the priority of the message, and dial in the ID to call, and your ID. Then tap Send. Sequence mode allows you to create sequences of arbitrary tones. First, you will see a list of your sequences. You can use Edit to add additional sequences, delete a sequence, or re-arrange them. Three sample tone sequences are created for you, as examples. To rename a sequence, tap on it and edit the text. To edit to send a sequence, tap on the disclosure indicator at the extreme right. Each sequence is a set of lines, each of which has two numbers. The first is the frequency of the tone in Hertz, the second is the duration of the tone in milliseconds. One second is 1,000 milliseconds. Do not put an additional space between the numbers, after them, before them, or use any other characters, or the sequence will not correctly play. You can play two tones at the same time, in that case, three numbers must be entered on each line, the first two are the tone frequencies, the third is the duration. The first sample sequence, Seq 1, sends eight tones. The first is 1200 Hz for 550 milliseconds, then there are six more tones: 1100, 1000, 1100, 1000, 1100, 1000 Hz, each 200 milliseconds. Then a final tone of 1500 Hz for 350 milliseconds. To play a sequence, tap Send. To edit a line, tap on it and edit the text. You need a single space between the frequency and length. You can use Edit to add additional lines, delete a line, or re-arrange them.

About

Dialnostics

This tool automates standard dialing diagnostic techniques for safe combinations. Input the current combination to see possible new combinations based on common lock issues like user error, loose dials, or stuck mechanisms. It also offers random combination generation and customization options.

Highlights
  • Automated dialing diagnostics
  • Possible new combination generation
  • Mark tried combinations
  • User error combination reveal
  • Loose dial ring reveal
  • Stuck fly reveal
  • Loose spline key reveal
  • Random combo generator
Features
Read full description

Have a customer locked out of their safe because their combination is no longer working? Dialnostics is your convenient tool to automate some of the standard dialing diagnostic techniques. Simply enter in the supposed combination and tap Calculate. Dialnostics will output the possible new combinations depending on the issue with the lock. Combinations are ordered in such a way to minimize dialing. Mark "tried" combinations by simply tapping or dragging on the combinations you wish to mark to toggle the status. Only the current combination displayed will be stored on your iDevice and any subsequent combinations will erase the previous combination completely. Use the Reset button to set and store the combination to 50-25-50. User Error: Reveals the possible combinations in the event that the user: has the correct numbers but in the wrong order, or attempted to change the combination by accidentally using the operating index at least once. The index section has the option to offset the operating index by an increment of 8, 10, or a custom value between 1 and 49. Loose Dial Ring: Reveals the possible combinations in the event that the dial ring has become loose causing the numbers to shift. Stuck Fly: Reveals the possible combinations in the event that a fly on one of the wheels has become stuck causing the numbers to drift. Loose Spline Key: Reveals the possible combinations in the event that the spline key has become loose causing the first and third numbers to raise up and the second number to drop down. Plus, use Random Combo to generate completely random safe combinations. You can filter unwanted third wheel numbers for the randomly generated combinations in Settings. You can also set the customized index offset (as described above for the user error section) and choose from a variety of skins: Lava, Evergreen, Ocean, Slate, Lavender, and Quartz. Compatibility: iPhone / iPod touch on iOS 8.0 or later and iPad on iOS 12.0 or later. Found a bug? Something not working? Have a suggestion? Feel free to contact me via email: farren@phoxlocks.com

Screenshots

Selcall Selective Calling Tone4 screens
Dialnostics4 screens

Verdict

The call

The clearest difference is review sentiment: Dialnostics at 100% against Selcall Selective Calling Tone's 50%. Dialnostics also leads on rating (5.0 vs 3.2). Selcall Selective Calling Tone's advantage is price ($2.99 vs $5.99) and update cadence (every 4 months vs every 7 months). On ratings volume, 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

Selcall Selective Calling Tone costs $2.99 and Dialnostics $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Dialnostics holds the better App Store score, 5.0 against 3.2. Both are backed by a comparable volume of ratings — 14 and 5 respectively. Written reviews point the same way: 50% of Selcall Selective Calling Tone's written reviews are positive against 100% of Dialnostics's.

UpkeepUpdate frequency

Selcall Selective Calling Tone ships an update every 4 months, Dialnostics every 7 months. The most recent releases landed on August 25, 2026 and September 7, 2026 respectively.

Scorecard5 real differences · 5 level
Selcall Selective Calling Tone versus Dialnostics: the parameters behind the verdict, then further details
ParameterSelcall Selective Calling ToneDialnostics
Price$2.99 — better$5.99
Rating3.2 (14 ratings)5.0 (5 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings14 — better5
Update frequencyEvery 4 months — betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.012.0
Further details — not scored
Size2 MB1 MB
Age rating4+4+
DeveloperBlack Cat SystemsFarren Domenici

Customer experience

Selcall Selective Calling Tone

All ratings14 ratings
Positive50.0%
Neutral14.3%
Negative35.7%
Written reviews38 reviews
Positive50.0%
Neutral13.2%
Negative36.8%

Dialnostics

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Selcall Selective Calling Tone

No in-app purchases

None

Dialnostics

No in-app purchases

Questions

Is Selcall Selective Calling Tone free?
Selcall Selective Calling Tone costs $2.99, with no in-app purchases.
Is Dialnostics free?
Dialnostics costs $5.99, with no in-app purchases.
Which has better reviews, Selcall Selective Calling Tone or Dialnostics?
Dialnostics is rated higher. Selcall Selective Calling Tone averages 3.2 out of 5 from 14 ratings, while Dialnostics averages 5.0 from 5 ratings.
Do Selcall Selective Calling Tone or Dialnostics have ads?
Neither Selcall Selective Calling Tone nor Dialnostics shows ads.
Which is updated more often, Selcall Selective Calling Tone or Dialnostics?
Selcall Selective Calling Tone ships an update every 4 months, and Dialnostics every 7 months. Most recently, Selcall Selective Calling Tone was updated on August 25, 2026 and Dialnostics on September 7, 2026.

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