Nixie Clocks vs こかげ
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nixie Clocks
This device displays time using vintage-style Nixie tubes, offering automatic internet time synchronization and online settings management. It features silent operation, extended tube life through direct drive, and cathode poisoning prevention. Users can also enjoy customizable RGB underlighting and remote firmware updates.
- Internet time synchronization
- Online settings management
- Silent operation
- Direct driven Nixie tubes
- Cathode poisoning prevention
- RGB underlighting
- Online firmware updates
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Zen Nixie Clock is our first 6-tube clock designed using R|Z568M nixie tubes from our production. The case is designed in a minimalistic way, combining simple aluminum stand and a glass cover – just like a museum vitrine. Thanks to its simple shapes, the clock suits every interior – especially offices, living rooms... Zen Nixie Clock features Internet connection – the clock contains a wifi module and is designed to operate online. The time is automatically synchronized from network, so you don’t have to do it manually and there are no other devices necessary (no GPS modules, radio modules etc..). In case of power loss, the clock remembers all the settings and time will be synchronized automatically from internet. Easy online settings – all settings of the Zen Nixie Clock can be controlled online from your user account on our website. No need to search for user guide anytime you want to make changes in settings! Silent circuitry – the clock is absolutely silent, there is no audible noise produced by its electronic parts. Direct driven design – nixie tubes are driven directly, this prolongs their lifetime. Common practice is to use multiplexed driving circuit (which is easier to manufacture and cheaper), but such a driving circuit shorten nixie tube lifetime. Cathode poisoning prevention – the clock can periodically run a cathode poisoning prevention routine. This helps to keep all digits of all tubes in good condition. Rotary knob – for offline users, there is a rotary knob on the back of the board. Using this knob, user can enter into settings menu and do the settings manually. This feature is still in development. Online firmware update – the integrated wifi module makes online firmware updates possible. Whenever there is a new firmware update (new features, bug fixes), your clock can be updated remotely. No blue spot – there are no blue spots in the tubes known from some other clocks (especially clocks built with IN-18 nixie tubes). Colon tubes – the clock support our colon tubes (in development), they will match design of the nixie tubes (by base and internal structure). RGB underlight – there are 8 RGB leds (WS2812B – “neopixels”) on the bottom of the board which make some cool effects possible. Purist customers who prefers nixie tube glow only can set the underlight off. This feature is in development!
こかげ
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Kokage is a 3D AI character you can talk with by voice or text. Speak or type, and your character answers with a natural voice, shifting expressions, and lively gestures. Choose how your character replies: run an AI model right on your device for free, offline chat, or use Kokage Cloud to start talking right away with no model download. You can switch anytime in Settings. "Kokage" (木陰) is Japanese for the shade beneath a tree — a quiet place to pause during a busy day. TALK OUT LOUD Speak into the microphone and your character listens, with speech recognition running right on your device. Replies are spoken aloud with lip sync using a built-in Japanese or English voice, or a cloud voice. Names, dates, and numbers are pronounced naturally. AS MANY CHARACTERS AS YOU LIKE Create as many characters as you like, each with their own conversation history, memories, voice, and 3D avatar. Start with the included character or bring your own VRM file (VRM 0.x or 1.0), and import or export character cards anytime. PERSONALITY, STYLE AND LANGUAGE Shape your character's role, tone, reply length, and how often they start a conversation on their own. Converse in Japanese, English, or Chinese (Simplified or Traditional), or let them match the language of your latest message. SHOW A PHOTO With a vision-capable model, snap a camera photo to talk about what you see. Switch to the rear camera and your character turns around to look with you. IT REMEMBERS — AND YOU STAY IN CONTROL Your character remembers helpful details you share, like preferences and plans. Undo a new memory on the spot, review, edit, or delete memories anytime, or turn memory off completely. You can also add shared notes that every character can draw on. EXPRESSIONS AND GESTURES Your character shifts posture naturally as they listen, think, and speak — nodding, shaking their head, bowing, or cheering along with the conversation. CHAT INVITATIONS AND APPLE HOME Turn on invitations to receive a daily greeting or a warm check-in after time away. You can also connect Apple Home (off by default) so your character can check on lights and other accessories or control them when you ask. FREE ON YOUR DEVICE Download a recommended model tailored to your device once, then chat offline whenever you like. Setup shows the exact download size upfront, and you can also add compatible public models from Hugging Face. KOKAGE CLOUD (OPTIONAL) • Cloud chat: start talking right away with no model download. • Cloud voices: design a voice from a description like "a calm, gentle voice," or clone your own voice (or one you have permission to use) in Japanese, English, or Chinese. • New looks: generate a 3D avatar (VRM) from a text description, a picture, or both. • Cloud Motion: live movement generated on the spot to match what your character is doing (on by default; can be turned off in Settings). Cloud voices, new looks, and Cloud Motion also work when replies run on your device. Kokage Cloud features use Leaf, available as in-app purchases. Leaf never expires, and unfinished requests are never charged. If Leaf runs out and an on-device model is installed, replies seamlessly continue on your device. No sign-up is required: an account is created automatically and can be deleted anytime in Settings. PRIVACY When replies run on your device, your conversation stays on your device. No ads, no analytics. When you use Kokage Cloud features, only the data needed for that feature — such as your messages and recent context, an attached photo, or an uploaded recording — is sent to Kokage Cloud and its AI providers. The app explains what is sent before you start. AI replies can be inaccurate or objectionable. You can report any reply directly inside the app. Privacy policy: https://kokage.moe/privacy/ Support: https://kokage.moe/support/
Screenshots
Verdict
The clearest difference is in-app purchases: Nixie Clocks at none against こかげ's 4. Nixie Clocks also leads on device support (4 vs 2) and iOS requirement (15.0 vs 18.6). こかげ's advantage is update cadence (every 3 weeks vs every 4 months). On price and ads 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
Both are free to download. こかげ sells 4 one-off in-app purchases. Nixie Clocks asks for nothing beyond the download.
Nixie Clocks ships an update every 4 months, こかげ every 3 weeks. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.
| Parameter | Nixie Clocks | こかげ |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (107 ratings) — better | — |
| Positive reviews | 73.3% of reviews | — |
| Number of ratings | 107 — better | — |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod, Apple TV — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 12 MB | 171 MB |
| Age rating | 9+ | 4+ |
| Developer | ljezny | Orcalogy LLC |
In-app purchases
Nixie Clocks
No in-app purchases
こかげ
- 言の葉 - ミニ$0.49
- 言の葉 - S$2.99
- 言の葉 - 中$9.99
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- 言の葉 - 大$29.99









