Nonius

about

description

Your phone has a gravity sensor, a magnetometer, a barometer, a light sensor and a microphone. Android gives you none of them. The apps that fill the gap are mostly a banner ad with a bubble drawn on top. Nonius is the other kind. Every face is drawn as an instrument rather than assembled from stock components, and every reading that depends on hardware has a calibration you can set, because no sensor is perfect and no screen reports its own size honestly. **The instruments** • **Level**, a round vial and a tube at once, with a zero point stored for your device, in degrees, percent or millimetres per metre • **Compass**, heading and field strength, true north from a declination you set since there is no location permission to find it for you, and the same face doubles as a metal detector for finding a nail behind plaster • **Ruler**, millimetres and inches, calibrated against a bank card rather than against the pixel density the panel claims • **Sound level**, in dB(A) or dB(Z), with peak and minimum hold, asking the device for the unprocessed microphone so that gain control cannot rewrite the number • **Tuner**, note and cents by YIN pitch detection, concert pitch adjustable from 415 to 466 Hz • **Counter**, a tally you tap anywhere or raise with the volume keys, which survives closing the app • **Altimeter**, height above a mark you set, exact enough to measure a staircase, with the pressure trend • **Light meter**, lux across six decades, from moonlight to direct sun • **Metronome**, BPM 30 to 250 and beats per bar 1 to 12 with the first beat accented, sample-accurate clicks • **G-force**, the magnitude of the three accelerometer axes against standard gravity, with peak hold Instruments your device has no sensor for are shown greyed out with the reason, instead of opening and then apologising. **What it does not do** There is no INTERNET permission in the manifest, so the app cannot send anything anywhere even by accident. The single permission is the microphone, requested when you open the sound level meter or the tuner. Nothing is recorded: each frame of audio becomes one number and is discarded. The only thing stored is the handful of calibration values for your device. Free software, GPL-3.0-or-later.

publisher

78ce6faa72264387284e647ba6938995735ec8c7d5c5a65737e55130f026307d

first seen

2026-09-17T22:35:29.001510+00:00

last event

2026-10-12 06:43 UTC

install

zapstore.dev or any Zapstore-compatible client

topics

#science & education

source & build

repository

https://github.com/john-athan/nonius

arch flags

android-arm64-v8a android-armeabi-v7a android-x86 android-x86_64

manifest

missing

releases (kind 30063)

4 releases indexed; latest 1.4.

version	channel	released	event
1.4	main	2026-10-12 06:43 UTC	7e4b7d52…
1.3	main	2026-09-27 09:29 UTC	307a9263…
1.1	main	2026-09-21 07:39 UTC	9610ba86…
1.0	main	2026-09-15 12:28 UTC	d331ed8a…

assets & verification

Every app, release and asset event is schnorr-verified (NIP-01 id + signature) before it enters the catalog, and assets are content-addressed by sha256. We subscribe read-only to the catalog relay — never write to it.

1.4 — nonius-1.4.apk

sha256

883b4d11d158cfb2fffe09e0c4ee7a48eb162ebc5d831b62343ada7ac63178af

size

1.6 MB

archs

android-arm64-v8a, android-armeabi-v7a, android-x86, android-x86_64

version code

6

apk cert sha256

790276a31437cb979f142463297f69e6dbebce26650251a6054d9ddf4de9007b

download

nonius-1.4.apk

1.3 — nonius-1.3.apk

sha256

30f1db0595a58ba3cd6d6f6c8d6774a7e3aea1d774bac0edfb089ea82dc8ba73

size

1.6 MB

archs

android-x86_64, android-arm64-v8a, android-armeabi-v7a, android-x86

version code

5

apk cert sha256

790276a31437cb979f142463297f69e6dbebce26650251a6054d9ddf4de9007b

download

nonius-1.3.apk

1.1 — nonius-1.1.apk

sha256

23964e77873bf55c9de13538b967a1638a2ba0893d1e35690f653b9f8928d1da

size

1.6 MB

archs

android-arm64-v8a, android-armeabi-v7a, android-x86, android-x86_64

version code

3

apk cert sha256

790276a31437cb979f142463297f69e6dbebce26650251a6054d9ddf4de9007b

download

nonius-1.1.apk

1.0 — dev.kaleve.nonius_2.apk

sha256

0ecf25a03444a44a65a3ecd0db0077e3987e92eed54d75001cadf8678e0b3453

size

1.5 MB

archs

android-x86_64, android-arm64-v8a, android-armeabi-v7a, android-x86

version code

2

apk cert sha256

790276a31437cb979f142463297f69e6dbebce26650251a6054d9ddf4de9007b

download

dev.kaleve.nonius_2.apk

Showing the newest 4 asset descriptors; the full set is in /api/apps/78ce6faa…