Comparison

Yotta Installer vs Z80CPM

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

Head to head
About

Yotta Installer

Features
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Yotta Installer is the field app for authorized Yotta Energy installers configuring solar sites. • Sign in with your company-provided installer account • Connect to a customer site (search by address or nearby sites) • Review site information, then open the site module diagram • Place inverters (DPI) on the map and assign channels to solar modules • Link batteries to modules; scan device serials with the camera (barcode/QR) or NFC tags • Optionally place gateways, meters, and access points on the diagram (Add Equipment) • Pinch to zoom and rotate the site map on iPhone This release (v2) replaces the legacy DemandHub BLE installer app with a modern site-map workflow backed by Yotta cloud services. For authorized installers only. Accounts are provisioned by your organization; there is no public sign-up.

About

Z80CPM

Experience the classic CP/M operating system on your iOS or Mac device with a full Z80 processor emulator. Run authentic CP/M software, including operating systems, word processors, programming languages, and text adventures. Works offline with support for multiple disk images.

Highlights
  • Full Z80 emulation
  • VT100 terminal support
  • Multiple disk image mounting
  • Offline functionality
  • Native Mac support
  • Downloadable CP/M disk images
Features
Read full description

RomWBW CP/M brings the classic CP/M operating system to your iPhone, iPad, and Mac with a full Z80 processor emulator. FEATURES • Full Z80 Emulation - Accurate instruction emulation runs authentic CP/M software • VT100 Terminal - ANSI escape sequence support for text adventures and productivity apps • Multiple Disk Support - Mount up to 4 disk images simultaneously • Download Disk Images - Fetch CP/M disk images directly from the RomWBW project • Works Offline - Downloaded disk images are stored locally • Native Mac Support - Runs natively on macOS via Mac Catalyst CLASSIC SOFTWARE Run the software that defined personal computing: • Operating Systems: CP/M 2.2, CP/M 3, ZSDOS, NZCOM, ZPM3 • Word Processing: WordStar • Programming: Turbo Pascal, Microsoft BASIC • Text Adventures: Zork, Adventure, Hitchhiker's Guide to the Galaxy • Databases: dBASE II • And thousands more CP/M programs GETTING STARTED 1. Open Settings and download a disk image (CP/M 2.2 recommended) 2. Select the disk image for Unit 0 3. Press Play to start the emulator 4. Press 0 at the boot menu to boot from disk BUILT ON ROMWBW This emulator is built on the RomWBW HBIOS platform, the same firmware used by real retro Z80 hardware projects. Disk images are downloaded from the official RomWBW project and include freely distributable CP/M software. TECHNICAL DETAILS • 80x25 character terminal display • hd1k disk format (8MB per slice, 64MB per disk) • Hardware keyboard support • Portrait and landscape orientation Perfect for retrocomputing enthusiasts, computer history education, or anyone who wants to experience the operating system that launched the personal computer revolution.

Screenshots

Yotta Installer4 screens
Z80CPM1 screens

Verdict

The call

The clearest difference is update cadence: Z80CPM at every 10 days against Yotta Installer's every 38 months. Z80CPM also leads on device support (4 vs 2). On price, ads, in-app purchases and iOS requirement 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Yotta Installer ships an update every 38 months, Z80CPM every 10 days. The most recent releases landed on November 7, 2026 and November 12, 2026 respectively.

Scorecard2 real differences · 7 level
Yotta Installer versus Z80CPM: the parameters behind the verdict, then further details
ParameterYotta InstallerZ80CPM
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 38 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.015.0
Further details — not scored
Size24 MB1 MB
Age rating4+4+
DeveloperBIA Controls Inc.Aaron Wohl

In-app purchases

None

Yotta Installer

No in-app purchases

None

Z80CPM

No in-app purchases

Questions

Is Yotta Installer free?
Yotta Installer is free to download, with no in-app purchases.
Is Z80CPM free?
Z80CPM is free to download, with no in-app purchases.
Do Yotta Installer or Z80CPM have ads?
Neither Yotta Installer nor Z80CPM shows ads.
Which is updated more often, Yotta Installer or Z80CPM?
Yotta Installer ships an update every 38 months, and Z80CPM every 10 days. Most recently, Yotta Installer was updated on November 7, 2026 and Z80CPM on November 12, 2026.

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