Selcall Selective Calling Tone vs sens07
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
sens07
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You need to be a Freediver or Spearfisher and require a sens07vest rescue device to benefit from this app! The sens07vest rescue device constantly observes drowning risk and inflates automatically floating bladders in case of high drowning risk. The device is designed for a maximal depth of 50 meters and performing a buoyancy of 15 kg. The safety parameters of the sens07vest can be defined using this app and transferred wirelessly to the device. Some main features of the sens07vest device: • Works fully autonomously and is "always-on". No power switch. • No battery charging or changing. Battery life is a minimum of five years. • Inflation algorithm is customizable to almost any diver activities. • Easy switching between three user profiles. • Optional suspend-button allows extending diving time. • Compact design ensures full maneuverability. • Self-test with clear red or green light feedback. • Easy replacement of consumable modules.
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Verdict
The clearest difference is price: sens07 at Free against Selcall Selective Calling Tone's $2.99. On update cadence, 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
sens07 is free to download; Selcall Selective Calling Tone costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 22, 2026 and October 26, 2026 respectively.
| Parameter | Selcall Selective Calling Tone | sens07 |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 3.3 (15 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 15 — better | — |
| Update frequency | Every 4 months | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 2 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Black Cat Systems | PROVITATEC AG |
In-app purchases
Selcall Selective Calling Tone
No in-app purchases
sens07
No in-app purchases
Questions
Is Selcall Selective Calling Tone free?
Is sens07 free?
Do Selcall Selective Calling Tone or sens07 have ads?
Which is updated more often, Selcall Selective Calling Tone or sens07?
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