Comparison

Tierzero Voice vs HydroCalc Basic

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

Head to head
About

Tierzero Voice

This app provides a unified communications solution, extending business phone features to mobile devices. It allows users to maintain a consistent identity across devices, manage calls, contacts, and voicemail from a single interface.

Highlights
  • Unified Communications solution
  • Maintain same identity across devices
  • Seamless call transition
  • Contact management
  • Voicemail access
  • Call history
  • Answering rules and presence management
Features
Read full description

Tierzero Voice is a SIP softclient that extends your Tierzero Service beyond the land line or desk top. It brings features of the Tierzero platform directly to end-user's mobile devices as a Unified Communications solution. Users are able to maintain the same identity when making or receiving calls from any location, regardless of device. They are also able to seamlessly transition an ongoing call from one device to another and continue that call without interruption. Tierzero Voice App grants users the ability to manage contacts, voicemail, call history and configurations in a single location. This includes the management of answering rules. greetings, and presence which all contribute to efficient communication.

About

HydroCalc Basic

Features
Read full description

Pipe Headloss Calculator provides engineers, designers, and students with powerful tools for pipeline hydraulic analysis — without the hassle of complex manual computations. Whether you’re sizing new pipelines or analyzing existing systems, the app delivers rapid, accurate results. Key Features Automatic Unit Conversion – Seamlessly switch between US Customary and SI units for length, flow, and diameter. Pipeline-Specific Inputs – Enter pipeline length, flow rate, internal diameter, and pipe material. Powerful Inverse Calculator – Set a target head loss and calculate the required diameter, flow, or length. Instantly view flow velocity, friction head loss, fitting losses, and full system curve data. With a clean interface and fast performance, this app is designed to save time and improve accuracy in hydraulic calculations — from the classroom to the field.

Screenshots

Tierzero Voice4 screens
HydroCalc Basic4 screens

Verdict

The call

The clearest difference is in-app purchases: Tierzero Voice at none against HydroCalc Basic's 1. HydroCalc Basic's advantage is update cadence (every 11 days vs every 12 months). On price, ads, device support 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. HydroCalc Basic sells 1 one-off in-app purchase. Tierzero Voice asks for nothing beyond the download.

UpkeepUpdate frequency

Tierzero Voice ships an update every 12 months, HydroCalc Basic every 11 days. The most recent releases landed on September 16, 2026 and September 23, 2026 respectively.

Scorecard2 real differences · 8 level
Tierzero Voice versus HydroCalc Basic: the parameters behind the verdict, then further details
ParameterTierzero VoiceHydroCalc Basic
PriceFreeFree
Rating3.0 (7 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 12 monthsEvery 11 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.1
Further details — not scored
Size106 MB35 MB
Age rating4+4+
DeveloperTierzeroTransparent Blue Water LLC

In-app purchases

None

Tierzero Voice

No in-app purchases

1 purchases

HydroCalc Basic

One-time1
  • Premium - Flow Units & Ad-Free$1.99

Questions

Is Tierzero Voice free?
Tierzero Voice is free to download, with no in-app purchases.
Is HydroCalc Basic free?
HydroCalc Basic is free to download, with in-app purchases available.
Do Tierzero Voice or HydroCalc Basic have ads?
Neither Tierzero Voice nor HydroCalc Basic shows ads.
Which is updated more often, Tierzero Voice or HydroCalc Basic?
Tierzero Voice ships an update every 12 months, and HydroCalc Basic every 11 days. Most recently, Tierzero Voice was updated on September 16, 2026 and HydroCalc Basic on September 23, 2026.

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