“Clunky At Best & Expensive — I have been using Sideline for at least 5 years now. It has always been bare-bones but it generally served its purpose - a second phone line for my business through my iPhone. However, the pricing was…”
Independent automated assessment · 3 signal sources · 504 reviews scanned · analyzed 2026-10-05.
4.4 ★14,781 ratings
—Downloads
12+Age rating
163 MBApp size
FreeIn-app purchases
About this app
Sideline gives you a second phone number for calling and texting—so you can stay connected without sharing your real number. Get the app today to keep your personal number private.
Whether you're working, selling online, or just want more control over who can reach you, Sideline makes it easy to separate your communications.
Get a second phone number, send unlimited texts, and manage calls with powerful tools—all from one app. Sideline works over your carrier network (not VoIP), so your second number is as reliable as your first.
Take control of your privacy and communication with Sideline.
WHY SIDELINE?
Protect Your Personal Number:
- Get a second phone number for private calling and texting - Keep your real number separate and secure - Choose a local area code (or an area code of your choice) - Includes Caller ID and custom voicemail - Reliable cellular calling (not VoIP)…
Preview
Real screenshots from the store listing.
Independent evidence report
The evidence behind this assessment
This is where the page changes from an app-store listing into an evidence report: findings, important reviews, pricing and a dated history.
Which version this describes
When we ran this analysis, and what the store lists now.
This analysis describes version v13.27 of the app, analyzed 2026-10-05 . The app may have changed since.
The store currently lists version v13.27, updated 2026-09-24.
What we measured
Each line is a measurement published as a measurement, never a verdict.
Each line is a measurement, published as a measurement. Where we have not looked, the line says so rather than reading as a zero.
Developer replies to reviews
Replies to fewer than 1 review in 20
Price in the store description
States no price and billing period
Cancelling, in the store description
Does not say how to cancel
Themes reported by reviewers
1 theme reported
Counted from the reviews we have read for this app. "No theme reported" means no theme reached our reporting threshold — it is not a finding that nothing is wrong with this app, and we do not say it is.
Five-star share of ratings
65–79% five-star
Arithmetic on the stores' own published rating counts. It says nothing about why the ratings fall where they do.
In the package we scanned
No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence about the app, not a finding about it.
Graded bands · predicate set 1.4 · how these are measured
What the analysis found
App-specific findings, grouped by what each one rests on. How they are graded lives on its own page.
Context 1
Measured and published because a reader would want to know — deliberately not a charge. The measurement alone does not show a harm.
Cheapest and priciest options are far apart
The disclosed in-app purchases span an unusually wide price range. Published as context: the cheapest and priciest items may be different kinds of product entirely, so the spread alone deducts nothing.
What we saw: In-app purchases run from USD 0.99 to USD 129.99 — a 131x spread across 10 items
One source only — shown, not confirmed 1
A single kind of evidence. We publish these because withholding them would be the bigger distortion, and we do not treat any of them as a finding we stand behind.
Reported by users: Price keeps rising
The price of the paid tier has been raised on existing users.
What we saw: Price keeps rising: raised by 16 distinct reviewers (3.2% of 504 reviews scanned)
Highlighted reviews
Representative public review excerpts shown as user reports, not Appworthy audit evidence.
“Lower the price — The service is ok but the price is atrocious. This app used to be free when i started using it. Then the price gradually increased every year.”
“My review — When I first got sideline it was going to be for business. We get no phone service or landline where we live. The business is no more but I have a few family that can only get ahold of me on sideline and so I kept it. I have…”
Assessment & version history
App changes and Appworthy events in one timeline.
Store listing updated to version v13.27.
What this app sells
Useful store-disclosed pricing, kept below the app listing.
Business modelFree
Prices and terms as disclosed by the store listing.