Subby App vs Simple Invoicer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Subby App
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The Subby App is a compact app to allow any HGV or delivery driver to accept jobs from the Roadrunner Transport Management System without the contractor necessarily using the Roadrunner TMS. The app will allow you to receive jobs via email, sms or other messaging apps and supply you with the details you need to get the job done. To get started you only need to provide your name and email address. While jobs are active (not new, booked or completed) the Subby App is able to track your location while you are moving to provide real-time ETAs of shipments and evidence of delivery. This feature can be disabled within the app, however may be a contractor requirement. Privacy Policy: https://roadtech.co.uk/privacypolicy/subbyapp/
Simple Invoicer
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Simple Invoicer is a time tracking and invoicing tool for freelancers and contractors.
Screenshots
Verdict
The clearest difference is update cadence: Subby App at every 2 months against Simple Invoicer's every 4 months. Subby App also leads on device support (3 vs 1) and iOS requirement (15.6 vs 17.6). On price, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Subby App ships an update every 2 months, Simple Invoicer every 4 months. Both last shipped on October 30, 2026.
| Parameter | Subby App | Simple Invoicer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 17.6 |
| Further details — not scored | ||
| Size | 47 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Road Tech Computer Systems Ltd. | ANDREW TIMNEY |
In-app purchases
Subby App
No in-app purchases
Simple Invoicer
No in-app purchases
Questions
Is Subby App free?
Is Simple Invoicer free?
Do Subby App or Simple Invoicer have ads?
Which is updated more often, Subby App or Simple Invoicer?
Other comparisons
